Exercise

Triple plays (mostly) all around

Prizes can be shared, even by more than two laureates. In fact, all prize categories but one – literature – have had prizes shared by three or more laureates.

Instructions

100 XP

Save a filter document criteria that, when passed to db.prizes.distinct, returns all prize categories shared by three or more laureates. That is, "laureates.2" must exist for such documents.
Save these prize categories as a Python set called triple_play_categories.
Confirm via an assertion that "literature" is the only prize category with no prizes shared by three or more laureates.